I 122 
Thoday .— The Female Inflorescence and Ovules of 
Above the closed region of the tube there are already signs of withering 
(w, Text-fig. 15 F); the canal is open and lined by a thin cuticle. Text- 
fig. 15 E shows the beginning of radial divisions in the 
outer epidermis to form the flange, and the ingrowth 
of some of the cells of the inner epidermis. Text- 
fig. 15 D passes through the closed region and shows 
the radial rows of cells which have been derived 
from the inner epidermis. At the lower edge of 
the figure is seen the free part of the flange and 
the tip of the outer integument (01) projecting 
upwards between it and the central portion of the 
micropylar tube. Below the flange (Fig. 15 C) the 
tube is nearly closed, but there is a narrow crevice 
between the epidermis of the two sides. The 
Text-fig. 14. Longi- . , t 1 .. ... 
tudinal section through apex micropylar canal lower down is always slit-like 
of abortive ovule of G. afri- 
canum, 1.5 mm. long. Ab.ES. 
= part of abortive embryo- 
(Fig. 16, PL LXXXVII). It gradually loses its lining 
of columnar cuticularized cells and its epidermis 
=remainsofponen'cha^mber; becomes thin-walled, made up of cells which are 
f= flange. The micropylar elongated in the tangential direction (Text-fig. 15 B). 
tip 0, closed ate; it is almost Just above the nucellar tip it becomes irregular in 
closed and lined with a cuti- outline (Text-fig. i 5 A). Nowhere is the epidermis 
cularized epidermis at L, and x ° 7 . . x 
is open below. torn or decayed, so that there is nothing com- 
Text-fig. 15, A-F.' Series of transverse sections through micropylar tube of fertilized 
ovule of G. africanum y described in text. 01 = outer integument. 
